CN204319217U - Novel light brush therapeutic instrument - Google Patents
Novel light brush therapeutic instrument Download PDFInfo
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- CN204319217U CN204319217U CN201420400478.9U CN201420400478U CN204319217U CN 204319217 U CN204319217 U CN 204319217U CN 201420400478 U CN201420400478 U CN 201420400478U CN 204319217 U CN204319217 U CN 204319217U
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- therapeutic instrument
- active element
- optic effect
- optically
- control circuit
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Abstract
This utility model provides a kind of novel light brush therapeutic instrument, it comprises the blue color filter, polaroid, longitudinal electro-optic effect optically-active element, eyepiece, the control circuit that set gradually, this control circuit is connected with the saturating electric light pole be provided with before and after longitudinal electro-optic effect optically-active element, the periodicity control voltage signal that this control circuit exports is to longitudinal electro-optic effect optically-active element between two saturating electric light poles, incident illumination is incident by blue color filter, polarized light is obtained via polaroid, then via longitudinal electro-optic effect optically-active element, then from eyepiece outgoing.This utility model light brush therapeutic instrument structure is simple, cost is low, noise is little, light and handy nimble, failure rate is low, and control accuracy is high.
Description
Technical field
This utility model relates to optical field, refers in particular to a kind of novel light brush therapeutic instrument being applied to ophthalmology amblyopia treatment.
Background technology
The physiological principle of light brush therapeutic instrument is based on moment extra large fourth grignard brush effect.Moment, extra large fourth grignard brush effect referred to that the immediate vicinity in this eye fixation direction can continue the image seeing similar high speed propeller when a therapist eye watch blue high light attentively by the polaroid that a piece rotates.Extra large fourth grignard brush effect instantaneously, we are referred to as light brush effect.Light brush effect only appears on central fovea of macula, because the central fovea of macula region that to be ocular vision the most responsive.Patient watches an image like brush or propeller attentively from the eyepiece of light brush therapeutic instrument, this effect only comes across the most responsive macula retinae district of vision, activating macula area pyramidal cell, making paracentral fixation move to center recess gradually by watching light brush attentively, thus raising vision, reach healing object.The therapeutic equipments that principle makes accordingly is exactly light brush therapeutic instrument.The treatment of light brush had both been applicable to the treatment of eyes paracentral fixation amblyopia, was also applicable to the treatment that eyes abnormal retinal is corresponding.
Light brush effect in traditional light brush therapeutic instrument be use mechanical mechanism rotate one be placed in white light source after the blue-tinted transparent disk posting polaroid realize.This kind of light brush therapeutic instrument often produces larger noise because using motor, and simultaneously because using motion, structure is very complicated, and also heavier, cost of manufacture is high, and instrument imaging control accuracy is poor, and the fault rate of instrument is higher.
Therefore, provide that a kind of structure is simple, cost is low, control accuracy is high, failure rate is low, noise are little, lightly nimble novel light brush therapeutic instrument is real in necessary.
Summary of the invention
The purpose of this utility model is to provide that a kind of structure is simple, noise is little, lightly nimble novel light brush therapeutic instrument.
For realizing this utility model object, provide following technical scheme:
This utility model provides a kind of novel light brush therapeutic instrument, it comprises the blue color filter set gradually, polaroid, longitudinal electro-optic effect optically-active element, eyepiece, control circuit, this control circuit is connected with the saturating electric light pole be provided with before and after longitudinal electro-optic effect optically-active element, the periodicity control voltage signal that this control circuit exports is to longitudinal electro-optic effect optically-active element between two saturating electric light poles, incident illumination is incident by blue color filter, polarized light is obtained via polaroid, then via longitudinal electro-optic effect optically-active element, this electrooptic effect optically-active element controls polarized light according to the periodicity control voltage signal that control circuit exports and produces deflection, again from eyepiece outgoing, the polarization direction of the polarized light exported can rotate or swing in the angular range of setting under described control voltage signal function.
This utility model light brush therapeutic instrument carrys out rotatory polarization sheet to realize traditional light brush therapeutic instrument of optically-active compared with adopting mechanical mechanism in prior art, structure is simpler, heavy frame for movement is not had to become more lightly nimble, longitudinal electro-optic effect optically-active element is utilized to carry out control deflection to the polarization direction of the polarized light exported through polaroid, it is the optical rotation phenomenon that make use of polarized light cleverly, the thinking orientation broken traditions, creative thinking and outstanding substantive distinguishing features, and avoid the heaviness of traditional mechanical structure, noise is large, the shortcomings such as fault rate is high, this utility model light brush therapeutic instrument structure is simple, cost is low, noise is little, lightly nimble, failure rate is low, and, utilize longitudinal electro-optic effect optically-active element, the control voltage signal more easy flexible modulation relatively of its control circuit, and control accuracy is high, therefore, this utility model has significant progress.
Preferably, the waveform of control voltage signal that this control circuit exports is sawtooth waveforms, and the minima of this sawtooth waveforms and optically-active differential seat angle corresponding to maximum are the integral multiples of 180 degree.The polarized light polarization direction that sawtooth waveforms control voltage signal can control to export rotates.
Preferably, the waveform of the control voltage signal that this control circuit exports is the consecutive variations waveform such as triangular wave or sine wave, and the polarization direction that can control the polarized light exported swings in the angular range of setting.Preferably, the polarization direction of the signal minimum in control voltage signal waveform each cycle and emergent light corresponding to the intermediate value of maximum is horizontal direction.Preferably, the control voltage signal minimum in each cycle and optically-active differential seat angle corresponding to maximum are less than or equal to 180 degree as required.
Preferably, the rotary speed of the polarized light polarization direction of output changes with control signal dynamic change, can change speed of rotation by the time-varying characteristics of control voltage.
Preferably, the swing speed of the polarized light polarization direction of output changes with control signal dynamic change, can change the swing speed exporting polarized light polarization direction by the time-varying characteristics of control voltage.
Preferably, the amplitude of fluctuation of the polarized light polarization direction of output can change with the change of control voltage Magnitude Difference.
Preferably, this longitudinal electro-optic effect optically-active element can adopt the automatically controlled wave plate of liquid crystal cell, Lithium metaniobate, potassium dihydrogen phosphate (KDP) pockels cell and potassium dideuterium phosphate (DKDP) pockels cell etc. wherein any one.
The polarization direction of polaroid can pre-determine as required, and preferably, the polarization direction of this polaroid is chosen to be horizontal direction.
Contrast prior art, the present invention has the following advantages:
Light brush therapeutic instrument of the present invention compared with prior art structure more simply, more lightly nimble, cost is low, noise is little, light and handy nimble, failure rate is low, and control accuracy is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model light brush therapeutic instrument;
Fig. 2 is that in this utility model, hypotenuse is the cyclic control signal schematic diagram of the sawtooth waveforms that straight line rises;
The cyclic control signal schematic diagram of Fig. 3 to be hypotenuse be sawtooth waveforms of the curve that a kind of uphill process is accelerated first quick and back slow again;
The cyclic control signal schematic diagram of the sawtooth waveforms of the curve slowed down again soon after Fig. 4 to be hypotenuse be a kind of uphill process is first slow;
The cyclic control signal schematic diagram of Fig. 5 to be hypotenuse be sawtooth waveforms that straight line declines;
The cyclic control signal schematic diagram of Fig. 6 to be hypotenuse be sawtooth waveforms of the curve that a kind of process that declines is accelerated first quick and back slow again;
The cyclic control signal schematic diagram of the sawtooth waveforms of the curve slowed down again soon after Fig. 7 to be hypotenuse be a kind of process that declines is first slow;
The cyclic control signal schematic diagram of Fig. 8 to be hypotenuse be triangular wave of straight line;
Fig. 9 is the crest curve wave period property control signal schematic diagram parallel with time shaft with the tangent line of trough;
The curve property wave period control signal schematic diagram on Figure 10 to be crest and trough be all pinnacle.
Detailed description of the invention
Refer to Fig. 1, this utility model light brush therapeutic instrument comprises the blue color filter 100, polaroid 200, longitudinal electro-optic effect optically-active element 300, eyepiece 400, the control circuit 500 that is connected with longitudinal electro-optic effect optically-active element that set gradually, this control circuit 500 by control signal wire 600 respectively with the Electrode connection of longitudinal electro-optic effect optically-active element, incident illumination is incident by blue color filter 100, polarized light is obtained via polaroid 200, then via longitudinal electro-optic effect optically-active element 300, then from eyepiece 400 outgoing.The polarization direction of polaroid 200 can be previously determined to be horizontal direction as required.
Electric light pole (sign) is provided with before and after this longitudinal electro-optic effect optically-active element 300, in specific embodiment, this longitudinal electro-optic effect optically-active element 300 can adopt front-back to plate the TN liquid crystal cell of ITO electrode, or this longitudinal electro-optic effect optically-active element 300 adopts the automatically controlled wave plate of Lithium metaniobate, potassium dihydrogen phosphate (KDP) pockels cell and potassium dideuterium phosphate (DKDP) pockels cell etc.This longitudinal electro-optic effect optically-active element optimal embodiment is liquid crystal cell.
The periodicity control voltage signal that this control circuit 500 exports is applied to saturating electric light interpolar before and after this longitudinal electro-optic effect optically-active element 300, polarized light produces deflection through this longitudinal electro-optic effect optically-active element 300 rear polarizer direction, and the polarization direction of the polarized light of output can rotate or swing in the angular range of setting under described control voltage signal function.
Incorporated by reference to consulting Fig. 2 ~ 10, if need the blue polarized light polarization direction exported to rotate, the waveform being applied to the control voltage of saturating electric light interpolar before and after longitudinal electro-optic effect optically-active element 300 can be the sawtooth waveforms of Changing Pattern as Suo Shi one of Fig. 2-Fig. 7.The minima in sawtooth voltage each cycle and optically-active differential seat angle corresponding to maximum are 180 degree, and the optical direction that Fig. 2-Fig. 4 is corresponding is contrary with optical direction corresponding to Fig. 5-Fig. 7.Speed of rotation can change with control voltage frequency change, the speed of rotation that different voltage waveform is corresponding can be at the uniform velocity or the speed change of a certain rule, according to liquid crystal cell as longitudinal electro-optic effect optically-active element, this waveform corresponding relation is relevant with the characteristic of liquid crystal cell, after selecting liquid crystal cell and light path, the waveform that at the uniform velocity corresponding waveform is corresponding with other Changing Patterns just can be decided.
If need the blue polarized light polarization direction exported to swing, the waveform being applied to the control voltage of saturating electric light interpolar before and after longitudinal electro-optic effect optically-active element 300 is the consecutive variations waveform such as the triangular wave of Changing Pattern as Suo Shi one of Fig. 8-Figure 10 or sine wave.The polarization direction of the voltage minimum in each cycle and emergent light corresponding to the intermediate value of maximum is horizontal direction, and the voltage minimum in each cycle and optically-active differential seat angle corresponding to maximum are less than or equal to 180 degree as required.The swing speed of the blue polarized light polarization direction exported can change with control voltage frequency change.The amplitude of fluctuation of the blue polarized light polarization direction exported can change with the change of control voltage Magnitude Difference.
The foregoing is only preferred embodiment of the present utility model, protection domain of the present utility model is not limited thereto, and anyly all belongs within this utility model protection domain based on the equivalent transformation in technical solutions of the utility model.
Claims (7)
1. a novel light brush therapeutic instrument, it is characterized in that, it comprises the blue color filter, polaroid, longitudinal electro-optic effect optically-active element, eyepiece, the control circuit that set gradually, this control circuit is connected with the saturating electric light pole be provided with before and after longitudinal electro-optic effect optically-active element, the periodicity control voltage signal that this control circuit exports is to longitudinal electro-optic effect optically-active element between two saturating electric light poles, incident illumination is incident by blue color filter, polarized light is obtained via polaroid, then via longitudinal electro-optic effect optically-active element, then from eyepiece outgoing.
2. novel light brush therapeutic instrument as claimed in claim 1, is characterized in that, the waveform of control voltage signal that this control circuit exports is sawtooth waveforms, and the minima of this sawtooth waveforms and optically-active differential seat angle corresponding to maximum are the integral multiples of 180 degree.
3. novel light brush therapeutic instrument as claimed in claim 1, is characterized in that, the waveform of the control voltage signal that this control circuit exports is the consecutive variations waveform such as triangular wave or sine wave.
4. novel light brush therapeutic instrument as claimed in claim 3, is characterized in that, the polarization direction of the signal minimum in control voltage signal waveform each cycle and emergent light corresponding to the intermediate value of maximum is horizontal direction.
5. the novel light brush therapeutic instrument as described in claim 3 or 4, is characterized in that, the control voltage signal minimum in each cycle and optically-active differential seat angle corresponding to maximum are less than or equal to 180 degree.
6. novel light brush therapeutic instrument as claimed in claim 1, it is characterized in that, this longitudinal electro-optic effect optically-active element adopt liquid crystal cell, the automatically controlled wave plate of Lithium metaniobate, potassium dihydrogen phosphate (KDP) pockels cell and potassium dideuterium phosphate (DKDP) pockels cell wherein any one.
7. novel light brush therapeutic instrument as claimed in claim 1, it is characterized in that, the polarization direction of this polaroid is chosen to be horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420400478.9U CN204319217U (en) | 2014-07-18 | 2014-07-18 | Novel light brush therapeutic instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420400478.9U CN204319217U (en) | 2014-07-18 | 2014-07-18 | Novel light brush therapeutic instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204319217U true CN204319217U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420400478.9U Active CN204319217U (en) | 2014-07-18 | 2014-07-18 | Novel light brush therapeutic instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204319217U (en) |
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2014
- 2014-07-18 CN CN201420400478.9U patent/CN204319217U/en active Active
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